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rikaikun icon

rikaikun

rikaikun shows the reading and English definition of Japanese words when you hover over Japanese text in the browser.

Users200KCurrent public install base
Rating4.7Store average score
Reviews1,865Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

rikaikun Media preview

5 assets
Trend

User growth trend

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User Growth Over Time

200K200K200K200K200K2026年7月13日2026年7月16日2026年7月19日Latest: 200K
Rating trend

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7-day rating change

Start
4.66
Latest
4.66
7-day rating change
0.00
4.564.614.664.714.762026年7月13日2026年7月16日2026年7月19日Latest: 4.66
2026年7月13日2026年7月19日
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Technical snapshot

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Version3.2.26
ManifestV3
Size28.11MiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

As a Japanese dictionary, rikaikun helps you look up the only the words you don't know without losing your place. It's also useful for Japanese speakers wanting to know how to say Japanese phrases in English.

Features:

* Using shift or enter, switch between word, names, and Kanji dictionaries.

* Enable text to speech in the options to hear Japanese words you look up spoken out load.

* Press 'c' to copy the current word and definitions to the clipboard for making flash cards.

* Customize how the pop up dictionary looks and what content it shows.

Reviews

Recent review snapshot

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Store average score4.7Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.4Average computed only from synced review bodies below
Reviews with text566Synced review bodies
Total ratings / reviews1,865Chrome Web Store public rating/review count

Store average score: 4.7. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5
387
4
90
3
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25
Bogarting2012年7月23日
5

Works really well. Time saver and a good learning tool. Using Google Chrome with Mac OSX 10.7.4

Language en
Clara Canal2012年7月11日
3

DON'T WORK ON FACEBOOK? D:

Language en
1 helpful · 0 not helpful
Jacquelene Chow2012年6月26日
5

I love it so much !!!

Language en
David Ross2012年6月16日
4

This is great to have of course, but please give us some more options with it. Like not highlighting link text..

Language en
Yari Yoda (OxydeG27)2012年6月2日
3

Vocabulary database not complete enough. Some Japanese words/Expressions could not be highlighted with Rikaikun and I had to Google translate all the way long or something like that. Also, please add the Japanese internet chattalk vocabulary database. Other than that, it's a very useful tool for learning Japanese. **Also this:It's VERY annoying whenever I'm on Niconicodouga...and there are several cases of...bugs? 1-Why can't the title of [insert video title here] be highlighted with Rikaikun. 2-Embedded Nicovideos/Mylists are a NIGHTMARE whether on other websites or on its own. The Rikaikun app then just popupon the whole set and induces visual pollution. The second case only appeared around a few months ago. I had been using Rikaikun for more than a year and the first time it was installed, it didn't happened... Please fix it some way or another because it REALLY annoys me as I have to turn down Rikaikun EVERYTIME this appears and have to reload it later...or2. I would give it a 5 if it wasn't for these...bugs.

Language en
Hafiz Karim2012年5月29日
4

I loved Rikaichan Id give it 5 Stars but I have to give 4 to Rikaikun. It is still very useful, just that I wish I can activate it by right clicking anywhere (like in Firefox). Please add that feature!! Thanks!

Language en
0 helpful · 1 not helpful
Nene Kalu Schaffert2012年5月25日
5

This extension has improved my kanji study greatly. It's fantastic!

Language en
Michael Creig2012年5月19日
5

I just activated rikaikun and scanned a web page of a Japanese political party in the Japanese language. It works! I skimmed over every Kanji on the page and it translated each word perfectly! This is a great translation tool to use with others! Great job!

Language en
Merry Skywalker2012年5月18日
5

This is a godsend.

Language en
及川武烈斗2012年5月14日
5

One of the best and most useful learning tools available. Reading and trying to improve your vocabulary in Japanese can be a rather daunting task, but with Rikaikun you can mouse over characters you might not recognize and suddenly learning and reading is alot easier.

Language en
1 helpful · 0 not helpful